Boiler-feed



(No'ModeI.)

W. B. OULVBR.

BOILER FEED.

Patented July 3, 1883.

WITNESSES the valve J and holds the same closed on its UNITED STATESPATENT FFIC.

VILLARD B. C ULVER, OF PITTSTON, PENNSYLVANIA.

BOILEKR SPECIFICATION forming part of Letters Patent No. 280,721, datedJuly 3, 1883.

Application filed February 2, 1883. (No model.)

To all whom, it may concern Be itknown that I, WILLARD B. GULvER, acitizen of the United States, residing at Pittston, in the county ofLuzerne, State of Pennsylvania, have invented a new and usefulImprovement in Automatic Safety Boiler-Feed, which improvement is fullyset forth in the following specification and accompanying drawings, inWhich- ,Figure l is a front view of the boiler-feed embodying myinvention. Fig. 2 is a vertical section of a detached portionthereof.Fig. 3 is a vertical section of another detached portion.

Similar letters of reference .indicate corresponding parts in theseveral figures.

My invention consists of a steam boiler or generator provided with meanswhereby in the event of low water the boiler will be automaticallysupplied, as hereinafter fully set forth.

Referring to the drawings, A represents a steam-boiler, which, exceptingas far as relates to my invention, is of usual construction.

B represents a' water tank or reservoir, which is properly supportedadjacent to the boiler, and is in communication therewith by means of apipe, B', so as to be under pressure of the boiler, said pipe having acock, B".

O represents apipe, which is connected with the boiler or one of theboilers of a series, and projected thereinto to what may be termed "thealarm water-line7 Said pipehaving, Youtside of the boiler, cocks D D'anda valve, E, the latter being between the cocks D D', and providedwith a fusible plug or head, F.

G represents avalve-chamber having apipe or branch, G', which isattached to a pipe, H, leading into the reservoir B, and a pipe orbranch, G", which is connected with the pipe C, adjacent to the cock D'.

J' represents the valve in the chamber G; J', the seat thereof, and Kthe valvestem, which is pivoted to a rising and falling arm, L, thefulcrum L' whereof is supported on'the branch G or pipe H, it beingnoticed that water from the reservoir B enters the valve-chamber throughthe pipe H, and exerts its pressure on seat.

Risingor projecting from the branch G",

and communicating therewith, is a branch, M, in which is fitted aplunger, N, havingastem, l?, the latter extending parallel with the stem.K, and having a pivotal connection with the cocks B" D D' being closedduring the operation of supplying or filling said reservoir, af-` terwhich said cocks are opened, the valve E remaining closed as itsoperative position. When the water in the boiler is at the proper heightor line, no service is required of the reservoir B, and the partsbetween the pipes H C remain inoperative. When, from neglect,mismanagement, or accident, the water in the boiler falls to thealarm-line and uncovers the inner end of the pipe C, steam from theboiler enters said pipe C and reaches the fusible plug F, thus meltingthe same, and thereby opening the valve E. Steam is thus admitted intothe branch G" and directed against the plunger N, so as to raise saidplunger. and consequently the arm L, whereby the valve .I is lifted fromits seat and communication established between the pipe H and branch G".Vater primarily from the reservoir B now leaves the valve-chamberG andflows through the branch G" and valve E into the pipe C, and thus intothe boiler, whereby the latter is again supplied and danger averted.rIhe branch G" is provided with a self-closing valve, a, whereby anyleakage through the valve .I or air in said branch may escape, saidvalve closing whenthe steam is admitted into said branch. A cock may,however, be employed in lieu of said valve a, so that when vleft opensteam admitted to the branch may escape or blow off through said cockand serve as an alarm.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is- I 1. An automatic water-feeding device fora Steam-boiler, operating in connection with a valve having a fusibleplug, said valve being between said device and boiler and communicatingwith both, substantially as described.

2. A steam-boiler, in combination with an ICO independentwaterreservoir, a valve having a fusible plug, and a plunger and valveeonnected to inove as one, whereby when the water in the boiler is lowthe fusible plug is melted, the plunger is operated, and its connectedValve opened, thus automatically adinitting rater from said reservoir tothe boiler, substantially as described.

3. An independent water-reservoir oom' munieating with a steam-boiler;in combination with a pipe communicating with the reservoir, a pipecommunicating with the boiler, a valve having a fusible plug, a plungerand valve connected as one, and a valveehaniber with branches, saidvalve having the fusible plug being between the pipe which leads to theboiler and the branch which leads to said connected plunger and valve,substantially as and for the purpose set forth.

4. The pipe C, with Cooks D D', and valve E, haifing a fusible plug, incombination with the plunger N, valve J, arm L, chamber G, with branchesor pipes G G, pipe H, and in dependent water-reservoir forming anautomatic safety boiler-feed, as set forth.

5. The reservoir B, pipe H and pipe C, and the Chamber G, in combinationwith the pipe or branch G, having a valve, a, substantially as andthe'purpose set forth.

WILLARD B. CULVER. Witnesses:

C. H. PHILLIPS, J. N. DAWSON.

